iOS 9.3.4 (build 13G35) is an official Apple over-the-air update for the iPhone 6s, released on 2016-08-04T17:08:28Z. The update package is 312.96 MB. This is a delta (partial) update that requires 9.2.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 1f5c41d0590a9f9e271565a159f1fc655f64bd31.zip.